We all know about Highest Common Factor or Greatest Common Divisors of two numbers. There are several simple methods – most of which hinge of factorizing the number. For instance, if we need to find HCF of 360 and 168. We write 360 as 23 *32 * 5 and 168 as 23 * 3 * 7 and then see that both have a 23 * 3 in them so the HCF should be 24. 360 = 24 * 15 168 is 24 * 7. 15 … [Read more...] about A Beautiful way of finding GCD of two numbers | Number Theory | CAT 2021
CAT Quantitative Aptitude
How to get better at inequalities
While most equations indicate a clear relationship between two statements, inequality problems ask test takers to answer questions based on limited information. And by “limited information,” inequality problems merely tell you that one side of the equation is larger (or smaller) than the other. With that in mind, here are a few tips to help you tackle even the trickiest … [Read more...] about How to get better at inequalities
Interesting questions from Number System | CAT 2021
From the beginning of human history, prime numbers aroused human curiosity. What are they? Why are the questions related to them so hard? One of the most interesting things about prime numbers is their distribution among the natural numbers. On a small scale, the appearance of prime numbers seems random, but on a large scale there appears to be a pattern, which is still not … [Read more...] about Interesting questions from Number System | CAT 2021
An intriguing geometry question | CAT 2021
Geometry questions that appear in the Quantitative Aptitude section of the CAT Exam broadly tests an aspirant on the concepts - Triangles, Circles, Quadrliaterals, Polygons & mixture of the above mentioned concepts. In CAT Exam, one can generally expect to get 4-6 questions from CAT Geometry. CAT Geometry is an important topic with lots of weightage in the CAT Exam. CAT … [Read more...] about An intriguing geometry question | CAT 2021
Pi Approximation Day and CAT Preparation
Pi Approximation Day and CAT Preparation Pi (pronounced like “pie”) is often written using the greek symbol “π”. The definition of π is: The Circumference divided by the Diameter of a Circle. 𝐉𝐮𝐥𝐲 𝟐𝟐𝐧𝐝 𝐢𝐬 𝐧𝐨𝐭 𝐏𝐢-𝐃𝐚𝐲, 𝐭𝐡𝐚𝐭 𝐝𝐢𝐬𝐭𝐢𝐧𝐜𝐭𝐢𝐨𝐧 𝐟𝐚𝐥𝐥𝐬 𝐭𝐨 𝐌𝐚𝐫𝐜𝐡 𝟏𝟒𝐭𝐡 (𝐢𝐧𝐚𝐜𝐜𝐮𝐫𝐚𝐭𝐞𝐥𝐲) March 14th is Pi Day, July 22nd is Pi approximation day. This … [Read more...] about Pi Approximation Day and CAT Preparation